A group of Western Australian grain growers has called on legal experts to investigate the possibility of a class action against grain marketing company Emerald Grain.

Growers are upset that the pool estimates were vastly different to payments made by the company in the 2011/2012 pool.

Growers who deliver to a pool receive average price estimates throughout the season, but its exposed to market fluctuations that effect the end payment.

Earlier this year Emerald's general manager Tom Howard admitted the pool had underperformed and the losses had run into millions of dollars.

It's not just an issue in Western Australia, as Emerald's dealings spread right across the eastern states including South Australia.

Lawyer with Granich Partners Nathan Draper says some growers have lost up to hundred's of thousands of dollars:

The legal firm is now asking farmers to contribute $1000 each to continue the case and take it to the next step.

A number of South Australian growers have contacted Grain Producers SA over the matter.

GPSA did not want to comment at this time but has recommended that growers seek all avenues to find out what they're entitled to.

Grain market strategist Malcolm Bartholomeaus says it wasn't just Emerald that was offering payments much lower than they're estimates in the 2011/2012 pool, other pool operators were in the same position.

Emerald Grain supplied a statement saying "

We accept that it is a pool participant's right to seek whatever recourse they consider appropriate. From a legal perspective it is important to note that pools don't guarantee a return and an EPR is only ever an estimate, this is made very clear in the terms and conditions. Our only advice would be that any growers seeking this course of action to seek independent legal advice before spending significant money on legal costs. Because some of the initial reporting in the media misrepresented the actual pool returns we have been communicating directly with growers to make them aware of their individual position. We remain available to discuss these matters with any of our customers. We remain committed to supporting our grower customers in Western Australia and will continue to work with growers in whatever way we can."